haha... what can the mods do to them though. If they ban 'em all they do is create a new username and start the bs again. If they are IP banned, they just gotta unplug their modem for 5 mins and plug it back in. haha make a feedback system like ebay haha... which will kill your servers and cost thousands in setup heh.
^ most ISP only give you a block of IP for your modem and i have multiple IP on 95% of the people on this site, so i'll ban the whole block through the server and he won't be getting on anytime soon.